One sentence per line

Signed-off-by: Doğukan Teber <[email protected]>

Author: dogukanteber

CONTRIBUTING.md

@@ -1,3 +1,6 @@
 # Contributing
 
-Welcome! We are excited that you are interested in contributing. `auth-gateway` is an extention project of [Cortex](https://github.com/cortexproject/cortex/), and we follow the same [contributing guidelines](https://cortexmetrics.io/docs/contributing/) as Cortex. Everything you read on that page applies to `auth-gateway` as well except the documentation part since we do not have any documentation yet.
+Welcome!
+We are excited that you are interested in contributing.
+`auth-gateway` is an extention project of [Cortex](https://github.com/cortexproject/cortex/), and we follow the same [contributing guidelines](https://cortexmetrics.io/docs/contributing/) as Cortex.
+Everything you read on that page applies to `auth-gateway` as well except the documentation part since we do not have any documentation yet.